<script setup lang="ts">
import {getHotRecommendAPI} from '@/services/hot'
import type {SubTypeItem} from '@/types/hot'
import {onLoad} from '@dcloudio/uni-app'
import {ref} from 'vue'

// 热门推荐页 标题和url
const urlMap = [
  {type: '1', title: '特惠推荐', url: '/hot/preference'},
  {type: '2', title: '爆款推荐', url: '/hot/inVogue'},
  {type: '3', title: '一站买全', url: '/hot/oneStop'},
  {type: '4', title: '新鲜好物', url: '/hot/new'},
]

// uniapp 获取页面参数
const query = defineProps<{
  type: string
}>()
// console.log(query)
const currUrlMap = urlMap.find((v) => v.type === query.type)
// 动态设置标题
uni.setNavigationBarTitle({title: currUrlMap!.title})

// 推荐封面图
const bannerPicture = ref('')
// 推荐选项
const subTypes = ref<(SubTypeItem & { finish?: boolean })[]>([])
// 高亮的下标
const activeIndex = ref(0)
// 获取热门推荐数据
const getHotRecommendData = async () => {
  const res = await getHotRecommendAPI(currUrlMap!.url, {
    // 技巧：环境变量，开发环境，修改初始页面方便测试分页结束
    // import.meta.env.DEV 是否为开发环境
    page: 1,
    pageSize: 10,
  })
  // console.log(res.result.title)
  bannerPicture.value = res.result.bannerPicture
  subTypes.value = res.result.subTypes
}

// 页面加载
onLoad(() => {
  getHotRecommendData()
})

// 滚动触底
const onScrolltolower = async () => {
  // 获取当前选项
  const currsubTypes = subTypes.value[activeIndex.value];
  // 分页条件
  if (currsubTypes.goodsItems.page < currsubTypes.goodsItems.pages) {
    // 当前页码累加
    currsubTypes.goodsItems.page++;
  } else {
    // 标记已结束
    currsubTypes.finish = true;
    // 退出并轻提示
    return uni.showToast({icon: 'none', title: '没有更多数据了~'});
  }

  // 调用API传参
  const res = await getHotRecommendAPI(currUrlMap!.url, {
    subType: currsubTypes.id,
    page: currsubTypes.goodsItems.page,
    pageSize: currsubTypes.goodsItems.pageSize,
  })
  // 新的列表选项
  const newsubTypes = res.result.subTypes[activeIndex.value]
  // 数组追加
  currsubTypes.goodsItems.items.push(...newsubTypes.goodsItems.items)
}
</script>

<template>
  <view class="viewport">
    <!-- 推荐封面图 -->
    <view class="cover">
      <image class="image" mode="widthFix" :src="bannerPicture"></image>
    </view>
    <!-- 推荐选项 -->
    <view class="tabs">
      <text
          v-for="(item, index) in subTypes"
          :key="item.id"
          class="text"
          :class="{ active: index === activeIndex }"
          @tap="activeIndex = index"
      >{{ item.title }}
      </text
      >
    </view>
    <!-- 推荐列表 -->
    <scroll-view
        scroll-top="200"
        enable-back-to-top
        v-for="(item, index) in subTypes"
        :key="item.id"
        v-show="activeIndex === index"
        scroll-y
        class="scroll-view"
        @scrolltolower="onScrolltolower"
    >
      <view class="goods">
        <navigator
            hover-class="none"
            class="navigator"
            v-for="goods in item.goodsItems.items"
            :key="goods.id"
            :url="`/pages/goods/goods?id=${goods.id}`"
        >
          <image class="thumb" :src="goods.picture"></image>
          <view class="name ellipsis">{{ goods.name }}</view>
          <view class="price">
            <text class="symbol">¥</text>
            <text class="number">{{ goods.price }}</text>
          </view>
        </navigator>
      </view>
      <view class="loading-text">
        {{ item.finish ? '没有更多数据了~' : '正在加载...' }}
      </view>
    </scroll-view>
  </view>
</template>

<style lang="scss">
page {
  height: 100%;
  background-color: #f4f4f4;
}

.viewport {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 180rpx 0 0;
  position: relative;
}

.cover {
  width: 750rpx;
  height: 225rpx;
  border-radius: 0 0 40rpx 40rpx;
  overflow: hidden;
  position: absolute;
  left: 0;
  top: 0;

  .image {
    width: 750rpx;
  }
}


.tabs {
  display: flex;
  justify-content: space-evenly;
  height: 100rpx;
  line-height: 90rpx;
  margin: 0 20rpx;
  font-size: 28rpx;
  border-radius: 10rpx;
  box-shadow: 0 4rpx 5rpx rgba(200, 200, 200, 0.3);
  color: #333;
  background-color: #fff;
  position: relative;
  z-index: 9;

  .text {
    margin: 0 20rpx;
    position: relative;
  }

  .active {
    &::after {
      content: '';
      width: 40rpx;
      height: 4rpx;
      transform: translate(-50%);
      background-color: #27ba9b;
      position: absolute;
      left: 50%;
      bottom: 24rpx;
    }
  }
}

.scroll-view {
  flex: 1;
  height: 0rpx;

  .goods {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    padding: 0 20rpx 20rpx;

    .navigator {

      width: 345rpx;
      // padding: 20px;
      margin-top: 20rpx;
      border-radius: 10rpx;
      background-color: #fff;
    }

    .thumb {
      width: 305rpx;
      height: 305rpx;
    }

    .name {
      height: 88rpx;
      font-size: 26rpx;
    }

    .price {
      line-height: 1;
      color: #cf4444;
      font-size: 30rpx;
    }

    .symbol {
      font-size: 70%;
    }

    .decimal {
      font-size: 70%;
    }
  }

  .loading-text {
    text-align: center;
    font-size: 28rpx;
    color: #666;
    padding: 20rpx 0 50rpx;
  }
}

</style>
